I'm interested to read predictions from everyone on when
we get back to normal and what the metrics will be that enable
us to flip the switch.
For us the crisis started earlier and even with social distancing (which now seems to be helping), our experts expect the peak to be at the end of may. The trajectory of illness can be long one. The average time a patients spends on the ICU here is around 23 days. But count incubation time, initial illness, getting better etc. on top of that and from the point of infection to being better, we are speaking in months. This is offcourse for the worst cases, but as long as people are ill, they can infect others. And there are so many of these bad cases that the hospitals keep flooding. But when the hospitals are at normal levels, it is not like we can return to normal, because then you will flood them again.
We can hope that, like with many viruses, the spread will be slower in peak spring and summer, but we simply do not know that at this point. And even if that is the case, there is a realistic chance it will return when we hit autumn/winter, like other widespread viruses do.
There are scientist here and other EU countries predicting we will need significant safety measures for at least more than a year, but what those measures will entail remains to be seen.
Personally, I don't think there will be a "flip the switch" moment, rather a gradual return to (some) activities with some major changes in regards to safety. When that will happen? Who knows, I think it will differ per nation. If the summer has the same impact on this virus as it does on Influenza, we will potentially have a window where people can live under less strict rules (but still under strict rules). And hopefully a vaccine or better preparation will make us more effective against its return. However, keep in mind the common cold is still there in the summer (which is partially due to coronaviruses), so it is entirely possble the spread will keep on going.
In the end, too many factors are unknown. But this will be a major problem for a long time to come if you ask me. And as others are saying, there will be a new normal.
I must stress though, while I work in a field somewhat related to this, I am by no means an expert (I am generally busy setting up/optimizing assays for viral research/diagnostics, but that is focused on the tech, not what viruses do/how they behave. That is not part of my knowledge).